One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of getting a good idea when to plant gayfeather is to look at the USDA zone info for Alexandria.

Planting Calendar for Gayfeather

Frost tolerance for gayfeather:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since gayfeather do well in cold you can plant them much earlier in the year than other plants that might not handle the cold.

The earliest that you can plant gayfeather in Alexandria is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant gayfeather and expect a good harvest is probably August. You probably don't want to wait any later than that or else your gayfeather may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your gayfeather indoors.

Last Frost Date

The average date of last frost is May 15 in Alexandria. In the coldest months of winter you should expect an average low temperature of -30°F.

Remember that USDA zone info for Alexandria may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Alexandria there is a last frost after May 15 so make sure that you are ready to cover your gayfeather in the event of a late frost.

USDA Zone Info for Alexandria

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Alexandria

You may be interested in your other planting guides for Alexandria.